Walter edwin trent



March 26, 1.929. w E, TRENT 1,706,422

COMBINED GAS HEATING AND COOKING STOVE Filed Oct. l2. 1922 Humm/woz Patented Mar. 26, 1929.

UNITED- STATES PATENT OFFICE.

WALTER EDWIN TRENT,l O .WASHINGTOIL DISTRICT OF COLUMBIA, ASSIGNOR T TBENT PROCESS CORPORATION, 0F NEW YORK, N. Y., A CORPORATION 'OF DELA- COMBINED GAS HEATING AND COOKING STOVE.

Application led October 12, 1922.' Serial No. 594,113.

The invention relates to improvements inl gas heating and cooking stoves..

It is an object of the invention to provide a gas stove that' is adapted to receive a`re- 6 placeable container having a charge of coinminuted carbonaceous fuel, the volatiles of which are vaporized when heat is applied thereto .to produce the required gas that is utilized for heating or cooking purposes.

l0 The invention contemplates the provision of an apparatus of this character wherein only a relatively small quantity'of fuel isnecessary to vaporize a substantially greater quantity of the volatile Aconstituents in the carbonaceous mass .to'produce gas in sufiicient quantities for cooking and heating purposes, which gas is preferably consumed as-it is generated.

The invention more specifically comprises a stove having gas making instrumentalities embodying a. removable container receivin'g a charge of comm-inuted coal and oil, which container is' positioned above burners or jets by means of which heat is generated to remove gasesfrom the charge, which gases are then consumed for heating or cooking purposes. When the jets are lighted and a very small quantity of heat produced, heat passing through the openingsin the plastic 30 fuel causes a vaporization of a materially larger quantity of the Volatile constituents thereof. The gases thus produced from the fuel pass to a main burner, being mixed with the proper quantities of air, and are there Consumed for heating or cooking purposes.

When the gas making burner is cutoif, the

production of gas from the fuel mass ceases,

so that a removable charge will last for a considerable period of time, and. gas may beY intermittently is desired.- I

As a modication of my invention, I may use an electric heater for vaporizing the vola in the feel mass in lieu of a gas 'The electric heater may be convsriims manners, so long as sufy is'produced to causea gasificag volatiles. Whether an gas heater is used, when the container have been largely 4o produced therefrom when it @aired residuetherein is dis-I In the accompanying drawings, Fig. 1 represents a vertical section of an embodiment of the invention showing an auxiliary gas. heater, and Fig. 2 illustrates a vertical section of a modified form of the invention wherein an electric heater is employed. Referring now more particularly to the drawings, wherein like reference characters indicate corresponding parts, the numeral l designates a` stove having supporting legs 2, which may be of any conventional form. The stove 4is provided` with an auxiliary burner 3, having a plurality of burner jets 4 extending therefrom, said burner receiving gas from a gas supply 4 controlled by the valve 4a. Air is introduced to said burner through the air feed pipe 5 controlled by a suitable valve, and is, of course, admitted in sufficient quantitiesto support combustion thereof. The burner 3 is provided with an opening 3', into Vwhich a lighting instrument may be inserted for initially lighting the burner'.

Disposed upon the burner 3, there is a removable container 7, preferably constructed of metal'or the like and having a bottom wall or base 7 provided with a plurality of apertures therein. This container receives a fuel charge 8, preferably of comminuted coal and oil, in such relative quantities as to be of a plastic consistency. 'lhe fuel mass is placed in the container 7 and has formed therein a plurality of openings 9 extending vertically therethrough, which openings may be formed in the mass -by the use of mandrels or the like. The fuel charge in the container 8 is proferably the amalgam produced ina manner disclosed in my Patent 1,420,164 granted June 20, 1922. The openings 9 in the fuel substantially align with the openings in the base 7' of the replaceable container so as to permit the base 7 to be seated 9s upon the burner 3 with burner jets 4 extending through the openings in the base 7 into the openings 9 in the fuel`chargc. The upper portion ofthe container 7 is open ended to permit afree exist of the gases,in a manner 100 which will later be described.

Tos l 3 and -gas admit 3 0 formed so as to provide a substantial gas receiver, having a plurality of burner jets 13 along the upper surface thereof, directly benea'tli the grid 14 of the stove. To support the combustion ofv the gasied fuel produced from the mass 8 bythe heat from the burner 4, an air pipe 15 enters the burner 11, and is formed with nozzles 15 passing up into the Ajets 13. Air is 'admitted to thisJ plpe through the, extension-16 of the air feed pipe controlled by valve 17. Al suitable cooking receptacle 18 may,be placedupon the gr1`d,' when the as is being used for cooking purposes, or, if desired, thegas may' be burned vto heat various articles placed u on the grid or for various other purposes. Tlhe'burner 11 is freely removable from the 'upper part of the container 7 by removing.

the detachable fasteners 12 and using a lifter 19. When it has been removed, then the container -7 may be removed from the auxiliary burner and a new one substituted. ,in place thereof; Such removal, however7 is only required when the fuel-charge in the container'has been asifiedand this fuel is to be replaced by a. -resh charge. When the apparatus is in use, a container: with a fuel `c arge is placed u on the auxiliary burner to the jets 4 by opening the valve Pl Air isal'so admitted to the gas and thev combustible chargeA ignited. The

- heat fromthis charge' is directed into the vertical openings 9, this heat being sufficient to penetrate the carbonaceos fuel, gasifying the volatiles thereof, which vpass out through the openings and vinto 'the burner 11.

"The burner jets-'13 ofthe main burner 11 little fuel is required'fo'r are, ofcourse, lighted, and the vaporized volatiles from thefel mass consumed, as produced, for cooking or heatingpurposes bythe burner 11. I have found that using a. composite fuel. charge a. ver-.v small quantity of fuel burned by the auxiliaryv burner is sufficient toenerate"a large quantit of gas from the el mass vv8," ,z-which isA su cient foranydomestic p'u` It is' therefore preferable to l1ave ev auxiliary 'small jets," as egeneration of substantially greater relative quantities of burner provided with velg combustible gases from the fuel mass-:L The auxiliary burner 3 is kept in operation as long as the production of heating 4or cooking gases is desirable, and whenever gas is no longer needed, it isonly necessary to shut oif the supply of gas through the auxiliary burner 3. The gas can then be turned on at a later time, which results in the production of combustible gases from the fuel mass which are burned by the main burner 11. When the charge has been'placed on the auxiliary burner, the-same may be intermittently lighted from time to time or continuously used until all of the volatiles in the* fuel mass have been gasied. The re`V lplaceable container' 7 is then removed, 'vt'ith/ its coked residue, and a. charge of greenfuel substituted in place thereof.

In Fig. 2 of the drawings, I have dis-"- closed another embodiment of this invention i wherein the base of the stove is provided with an electric grid22 seated in a suitable that the gas produced thereby will not be diluted with some products .of combustion, which occurs when an auxiliary gas heater is employed. Various forms of electric heaters may b'e-used for this purpose, and I have only attempted to disclose one structure which I-have found satisfactory. The gases produced by the heat'from the electric heaterv pass on into the main burner 11, which is identical1y the same as the burner disclosed in Fig. 1. This burner has the air feed 16 with the jets 15 and is removable so as to permit the container '7 `to be replaced whenever desired. Y

From the foregoing, it will be apparent that I have provided a combined gas making plant and stove, which is highly susceptible of use 'in localities Wheremunicipal gas is not` obtainable or is relatively high in price. The replaceable* containers receiving the comminute'd coal and oil'mayv be freely mounted over 'the auxiliary burners, and

when thegaseous materials in a charge conterial,` however, is suilicient to produce a.

great deal of gas, sothat it is'not necessary to replace the containers every time the stove is toA be used.- It ;mayjfrequently happen that a single container will besuilicient for produci-n vgases intermittently over a' long 'periodo time. y 1

Having thus described my invention, what Iclaimis:

1. A stove of the. character described comprising abase member having openings in the upper wall thereof, afuel receiver dislos posed thereon and: adapted to receive a ormed charge o f carbonaceous fuel having passageways extending therethrough and to maintain such charge with said passageways in alignment with said openings, means 1n saidibase fdr generating heat and ldirecting flow thereof through sald assages, a burner associated withcthe end 'ov said receiver re- 0 a very rich gas 1s deslrable, as 1t'1s apparent mote from said ba-se member to receive gases generated in said receiver, and means for supplying air in controlled quantities to said urner.

2. A portable stove comprising a base member having a pluralit of spaced openings in the upper wall thereof, a lfuel receiver adapted to be seated thereon with openings in the bottom thereof in alignment with the rst-mentioned openings, means for generating heat and directing flow thereof through said openings into a fuel charge in said receiver, a burner associated with the upper end of said receiver, and means for supplying air in controlled quantities to said urner.

3. A portable stove comprising a base member having top, bottom and side walls defining a hollow space, a plurality of upwardly-extending nozzles defining openings in the top wall thereof, a fuel receiver seated.

thereon and adapted to Vreceive a formed charge of carbonaceous fuel having passageways extending therethrough and to maintain such charge with said passageways in alignment with said nozzle openings with said nozzles extending into said assageways, means for leading a combustible gas to said hollow base member, means for su plying air to support combustion of said s and to direct the products of combustion ongitudinally of said passageways, a burner comprising a plurality of jets seated on said receiver in gas-receiving relation to said reoeiver, and means for supplying air in controlled amounts to said 'ets.

In testimon whereof affix my si nature.

ALTER EDWIN TR NT. 

